Actuator for a parking lock system of a vehicle gearbox
AssigneeValeo Electrification
InventorsMickael BESNARD, Abdou SALEMBERE, Frederic RIBERA
Life of this patent
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Abstract
An actuator for a parking lock system of a vehicle transmission gearbox. The actuator includes an electric motor having a casing in which a stator and a rotor are housed, the rotor being connected to a rotary shaft, the rotation of said shaft being guided by at least two guide elements. The actuator further includes a mechanism with a wheel and a worm situated on the drive shaft. At least two rings are mounted on the drive shaft so that, under the effect of an axial force generated by the wheel on the worm, at least one of the rings abuts against the casing or against at least one of the guide elements in order to generate friction torque, thus placing the actuator in a wedged condition.
Claims20
An actuator for a parking lock system of a vehicle transmission gearbox, said actuator comprising an electric motor having a casing in which a stator and a rotor are housed, said rotor being rotatably connected to a rotary shaft, the rotation of said shaft being guided by at least two guide elements, said actuator further comprising a mechanism with a wheel and a worm situated on the drive shaft, wherein at least two rings are mounted on the drive shaft so that, under the effect of an axial force generated by the wheel on the worm, at least one of the rings abuts against the casing or against at least one of the guide elements in order to generate friction torque thus placing the actuator in a wedged condition.
Dependencies are inferred from the claim text.